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Thematische Bibliographien / 2-N,N-dimethylaminoethyl methacrylate / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „2-N,N-dimethylaminoethyl methacrylate“

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Veröffentlicht am 25. Januar 2025

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1

Ševčík, Stanislav, und Martin Přádný. „Quaternary salts of N,N-dimethylaminoethyl esters of pivalic and 2-methyl-3-methoxypropionic acid and their hydrolysis“. Collection of Czechoslovak Chemical Communications 51, Nr. 1 (1986): 206–14. http://dx.doi.org/10.1135/cccc19860206.

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The synthesis and kinetics of quaternization of model compounds of poly(N,N-dimethylaminoethyl methacrylate) in water-alcoholic solutions brought about by methyl iodide and the alkaline hydrolysis of products in water have been investigated. N,N-Dimethylaminoethyl pivalate was selected as a model of the structural unit of the reported polymer; N,N-dimethylaminoethyl-2-methyl-3-methoxypropionate was the model of the terminal unit of the anionically prepared polymer.

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2

Kanerva, Lasse, Tuula Estlander und Riitta Jolanki. „Active sensitization caused by 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, ethyleneglycol dimethacrylate and N,N-dimethylaminoethyl methacrylate“. Journal of the European Academy of Dermatology and Venereology 1, Nr. 3 (Oktober 1992): 165–69. http://dx.doi.org/10.1111/j.1468-3083.1992.tb00628.x.

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3

Zhu, Mingyuan, Guangqin Luo, Lihua Kang und Bin Dai. „Novel catalyst by immobilizing a phosphotungstic acid on polymer brushes and its application in oxidative desulfurization“. RSC Adv. 4, Nr. 32 (2014): 16769–76. http://dx.doi.org/10.1039/c4ra01367k.

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4

You, Jin-Oh, und Debra T. Auguste. „Feedback-regulated paclitaxel delivery based on poly(N,N-dimethylaminoethyl methacrylate-co-2-hydroxyethyl methacrylate) nanoparticles“. Biomaterials 29, Nr. 12 (April 2008): 1950–57. http://dx.doi.org/10.1016/j.biomaterials.2007.12.041.

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5

París, Rodrigo, und Isabel Quijada-Garrido. „Temperature- and pH-responsive behaviour of poly(2-(2-methoxyethoxy)ethyl methacrylate-co-N,N-dimethylaminoethyl methacrylate) hydrogels“. European Polymer Journal 46, Nr. 11 (November 2010): 2156–63. http://dx.doi.org/10.1016/j.eurpolymj.2010.09.004.

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6

Şen, M., und M. Sarı. „Radiation synthesis and characterization of poly(N,N-dimethylaminoethyl methacrylate-co-N-vinyl 2-pyrrolidone) hydrogels“. European Polymer Journal 41, Nr. 6 (Juni 2005): 1304–14. http://dx.doi.org/10.1016/j.eurpolymj.2004.12.017.

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7

Karesoja, Mikko, Erno Karjalainen, Sami Hietala und Heikki Tenhu. „Phase Separation of Aqueous Poly(2-dimethylaminoethyl methacrylate-block-N-vinylcaprolactams)“. Journal of Physical Chemistry B 118, Nr. 36 (02.09.2014): 10776–84. http://dx.doi.org/10.1021/jp5062368.

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8

Vassilev, Krassimir, und Sevdalina Turmanova. „Complexes of poly(2-N,N-dimethylaminoethyl) methacrylate with heavy metals I. Preparation and properties“. Polymer Bulletin 60, Nr. 2-3 (20.11.2007): 243–50. http://dx.doi.org/10.1007/s00289-007-0864-8.

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9

Tang, Xin De, Xin Wang und Yuan Yuan Dou. „Triply-Responsive Poly(N,N-Dimethylaminoethyl Mathacrylate) with an Azobenzene Moiety“. Materials Science Forum 663-665 (November 2010): 1049–52. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.1049.

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A serious of triply-responsive poly(N,N-dimethylaminoethyl methacrylate) (PMAEMA) containing an azobenzene group as the terminal group were synthesized by atom transfer radical polymerization (ATRP). The ATRP process of DMAEMA was initiated by an azobenzene derivative substituted with a 2-bromoisobutyryl group (Azo-Br) using CuCl/Me6TREN as catalyst and the mixture of DMA and H2O (v/v = 3:1) as solvent. The molecular weights and their distributions of the resulting homopolymers (Azo-PDMAEMA) were characterized by gel permeation chromatography (GPC). The polymers are soluble in aqueous media and exhibit a lower critical solution temperature (LCST) that alternated reversibly in response to pH and photoisomerization of the terminal azobenzene moiety. It was found that the LCST increased as pH decreased in the range of testing. Under UV light irradiation, the trans-to-cis photoisomerization of the azobenzene moiety resulted in a higher LCST, while it recovered under visible light irradiation.

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10

Andreeva, L. N., M. A. Bezrukova, S. V. Bushin, T. N. Nekrasova, R. T. Imanbaev, V. D. Pautov, Yu I. Zolotova, O. V. Nazarova und E. F. Panarin. „Conformational and dynamic characteristics of copolymers of N,N-dimethylaminoethyl methacrylate and 2-deoxy-2-methacrylamido-D-glucose“. Polymer Science Series A 56, Nr. 4 (Juli 2014): 405–13. http://dx.doi.org/10.1134/s0965545x14040014.

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11

Kozuka, Hiroshi, Toshitsugu Hosokawa und Toru Takagishi. „Binding of butyl orange by poly(2-dimethylaminoethyl methacrylate) and copolymers of 2-dimethylaminoethyl methacrylate and N-vinyl-2-pyrrolidone: Peculiar temperature dependence of the binding“. Journal of Polymer Science Part A: Polymer Chemistry 27, Nr. 2 (30.01.1989): 555–63. http://dx.doi.org/10.1002/pola.1989.080270215.

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12

Vassilev, Krassimir, und Sevdalina Turmanova. „Complexes of poly(2-N,N-dimethylaminoethyl) methacrylate with heavy metals II. Oxidation of cyclohexene with tert-butylhydroperoxide“. Polymer Bulletin 60, Nr. 4 (20.12.2007): 467–75. http://dx.doi.org/10.1007/s00289-007-0879-1.

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13

Gürdağ, Gülten, und Selva Çavuş. „Synthesis and swelling behavior of poly(2-dimethylaminoethyl methacrylate-co-N-hydroxymethyl acrylamide) hydrogels“. Polymers for Advanced Technologies 17, Nr. 11-12 (2006): 878–83. http://dx.doi.org/10.1002/pat.846.

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14

Boyaci, Talin, und Nermin Orakdogen. „pH-responsive poly(N,N-dimethylaminoethyl methacrylate-co-2-acrylamido-2-methyl-propanosulfonic acid) cryogels: swelling, elasticity and diffusive properties“. RSC Advances 5, Nr. 94 (2015): 77235–47. http://dx.doi.org/10.1039/c5ra11634a.

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15

Ni, Henmei, Yadong Yang, Yixuan Chen, Junxiu Liu, Lijuan Zhang und Min Wu. „Preparation of a poly(DMAEMA-co-HEMA) self-supporting microfiltration membrane with high anionic permselectivity by electrospinning“. e-Polymers 17, Nr. 2 (01.03.2017): 149–57. http://dx.doi.org/10.1515/epoly-2016-0207.

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AbstractA cross-linked microfibrous anion exchange membrane with high ion permselectivity and robust mechanical properties was fabricated by electrospinning. Copolymer, poly N,N-dimethylaminoethyl methacrylate (DMAEMA)-co-2-hydroxyethyl methacrylate (HEMA), was selected as the electrospun material. Fourier transform infrared (FTIR) spectroscopy, 1HNMR and scanning electron microscopy (SEM) were employed to characterize the copolymer and microfibrous mat. The electrospinning optimal parameters were determined by orthogonal experiments. Formaldehyde vapor was applied to crosslink the mat. It was observed that the water sorption decreased from 75.7% to 30.4% as the crosslinking time increased from 20 h to 32 h. The robust mat with the high tensile strength of 4.62 MPa and 50% elongation at break was obtained at 24 h. The ion permeability of NO3−, Cl−, SO42− were 94, 91 and 87%.

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16

Přádný, Martin, Stanislav Ševčík und Stela Dragan. „Calculation of the differential rate constants of quaternization reactions of polymer amines“. Collection of Czechoslovak Chemical Communications 53, Nr. 5 (1988): 999–1006. http://dx.doi.org/10.1135/cccc19880999.

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A method is described for the calculation of differential rate constants using an empirical description of the time dependence of the product of integral rate constant and time or of conversion. The method has been verified for quaternization reactions of poly(2-dimethylaminoethyl methacrylate), poly(4-dimethylaminomethylstyrene), poly[N-(3-dimethylaminopropyl)acrylamide], poly(4-vinylpyridine), poly(iminoethylene), and [4-bis(2-hydroxyethyl)aminomethylstyrene] as a function of conversion of the reaction. The calculations were carried out using reported data on the dependence of conversion on time.

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17

Takagishi, Toru, Toshitsugu Hosokawa und Yasumichi Hatanaka. „Binding methyl orange and hydrophobic fluorescent probes by poly(2-dimethylaminoethyl methacrylate) and copolymers of 2-dimethylaminoethyl methacrylate and N-vinyl-2-pyrrolidone: pH dependence of the binding and fluorescence intensity“. Journal of Polymer Science Part A: Polymer Chemistry 27, Nr. 1 (15.01.1989): 1–13. http://dx.doi.org/10.1002/pola.1989.080270101.

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18

Noein, Leila, Vahid Haddadi-Asl und Mehdi Salami-Kalajahi. „Grafting of pH-sensitive poly (N,N-dimethylaminoethyl methacrylate-co-2-hydroxyethyl methacrylate) onto HNTS via surface-initiated atom transfer radical polymerization for controllable drug release“. International Journal of Polymeric Materials and Polymeric Biomaterials 66, Nr. 3 (22.06.2016): 123–31. http://dx.doi.org/10.1080/00914037.2016.1190927.

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19

Xing, Tie Ling, Hai Jiang Wang, Zhan Xiong Li und Guo Qiang Chen. „Surface Grafting Modification of Silk Fibroin by Atom Transfer Radical Polymerization“. Key Engineering Materials 373-374 (März 2008): 629–32. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.629.

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In this work, surface modification of silk fibroin was conducted by grafting dimethylaminoethyl methacrylate (DMAEMA) via ATRP to produce well controlled grafting silk. First, the amino groups and hydroxyl groups on the side chains of the silk fibroin reacted with 2-bromoisobutyryl bromide (BriB-Br) to obtain efficient initiator for ATRP. Subsequently, the functional silk fibroin was used as macroinitiator of DMAEMA in 1,2-dichlorobenzene in conjunction with CuBr/N,N,N',N",N" -pentamethyldiethylenetriamine (PMDETA) as a catalyst system. FT-IR characterization of the modified silk substrate showed a peak corresponding to DMAEMA indicating that the polymer had been formed on the silk surface. Following the polymerization, the tertiary amino groups on the grafted silk fibroin were quaternized to produce a large concentration of quaternary ammonium groups, which endowed the silk substrate with potential antibacterial surface. The graft chains were cleaved by acid hydrolysis and analyzed by gel permeation chromatography (GPC). The GPC results indicated that the graft layer were well-controlled.

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20

Ourdani, Samia, und Farouk Amrani. „Study of the miscibility of poly(styrene–co-4-vinylbenzoic acid) with poly(ethyl methacrylate) or with poly[ethyl methacrylate–co-(2-N,N-dimethylaminoethyl) methacrylate] by inverse gas chromatography“. Journal of Chromatography A 969, Nr. 1-2 (September 2002): 287–99. http://dx.doi.org/10.1016/s0021-9673(02)00885-3.

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21

Nekrasova, T. N., L. N. Andreeva, A. A. Lezov, M. A. Bezrukova, O. V. Nazarova, Yu I. Zolotova, N. V. Tsvetkov und E. F. Panarin. „Optical and hydrodynamic properties of solutions of copolymers of N,N-dimethylaminoethyl methacrylate and 2-deoxy-2-methacrylamido-D-glucose that contain silver particles“. Polymer Science Series A 57, Nr. 2 (März 2015): 103–14. http://dx.doi.org/10.1134/s0965545x15020121.

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22

Boyaci, Talin, und Nermin Orakdogen. „Poly(N,N-dimethylaminoethyl methacrylate-co-2-acrylamido-2-methyl-propanosulfonic acid)/Laponite nanocomposite hydrogels and cryogels with improved mechanical strength and rapid dynamic properties“. Applied Clay Science 121-122 (März 2016): 162–73. http://dx.doi.org/10.1016/j.clay.2015.12.018.

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23

Kim, Byungsoo, Daesun Hong und Wenji V. Chang. „LCST and UCST double-phase transitions of poly(N-isopropylacrylamide-co-2-acrylamidoglycolic acid)/poly(dimethylaminoethyl methacrylate) complex“. Colloid and Polymer Science 293, Nr. 3 (20.11.2014): 699–708. http://dx.doi.org/10.1007/s00396-014-3452-0.

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24

Dutta, Pranabesh, Joykrishna Dey, Anshupriya Shome und Prasanta Kumar Das. „Nanostructure formation in aqueous solution of amphiphilic copolymers of 2-(N,N-dimethylaminoethyl)methacrylate and alkylacrylate: Characterization, antimicrobial activity, DNA binding, and cytotoxicity studies“. International Journal of Pharmaceutics 414, Nr. 1-2 (Juli 2011): 298–311. http://dx.doi.org/10.1016/j.ijpharm.2011.05.006.

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25

Dubruel, Peter, und Etienne H. Schacht. „Effect of Polyethylene Oxide Blocks or Grafts on the Physicochemical Properties of Poly(2-N-(Dimethylaminoethyl) Methacrylate) DNA Complexes“. Journal of Bioactive and Compatible Polymers 15, Nr. 4 (Juli 2000): 279–96. http://dx.doi.org/10.1177/088391150001500401.

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26

DUBRUEL, PETER, und ETIENNE H. SCHACHT. „Effect of Polyethylene Oxide Blocks or Grafts on the Physicochemical Properties of Poly(2-N-(dimethylaminoethyl) methacrylate) DNA Complexes“. Journal of Bioactive and Compatible Polymers 15, Nr. 4 (01.07.2000): 279–96. http://dx.doi.org/10.1106/b814-y2tw-9d8x-8g1y.

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27

Zheng, Xiang, Tingbin Zhang, Xiaoyan Song, Ling Zhang, Chunqiu Zhang, Shubin Jin, Jinfeng Xing und Xing-Jie Liang. „Structural impact of graft and block copolymers based on poly(N-vinylpyrrolidone) and poly(2-dimethylaminoethyl methacrylate) in gene delivery“. Journal of Materials Chemistry B 3, Nr. 19 (2015): 4027–35. http://dx.doi.org/10.1039/c4tb01956c.

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The characteristics of graft and block copolymers based on PVP and PDMAEMA in pDNA compaction, cytotoxicity, transfection efficiency, internalization and intracellular distribution were systematically investigated.

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28

Díaz-Rodríguez, Selena de la Caridad, Oridayma Tarano-Artigas, Wilberth Herrera-Kao, Juan Valerio Cauich-Rodríguez, José Manuel Cervantes-Uc, Ana Rosa-Sainz, Amisel Almirall La Serna und Yaymarilis Veranes-Pantoja. „Effect of the Silanization of Aerosil OX50 in the Properties of Light-Cured Dental Composites“. Applied Sciences 14, Nr. 6 (14.03.2024): 2453. http://dx.doi.org/10.3390/app14062453.

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In this study, the surface of aerosil OX50 was treated with γ-methacryloxypropyltrimethoxysilane in order to evaluate its effect on light-cured dental composites. Four composites were prepared with Bis-GMA/tetraethylene glycol dimethacrylate/γ-methacryloxypropyltrimethoxysilane, Bis-GMA/tetraethylene glycol dimethacrylate, and a 45% treated or untreated aerosil OX50, using the camphorquinone/N,N-dimethylaminoethyl methacrylate pair as initiator. Evidence of filler silanization was provided by FTIR as a low-intensity absorption at 1707 cm−1 (carbonyl functional group) while thermogravimetric analysis showed a mass loss of approximately 2% associated with the decomposition of γ-methacryloxypropyltrimethoxysilane. The experimental composites studied meet the requirements of the ISO 4049:2019 standard for depth of cure, water sorption, and solubility. The composites are shown to be thermally stable and presented a degree of conversion higher than 70%, being higher than that reported for many commercial composites. Based on the observed properties, the best formulations were those in which the silane is incorporated into the matrix and the filler was previously treated.

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29

Zhu, Xian Mei, Gang Hu Cheng und Hong Zhao Liu. „Study on Branched Polyacrylamide Preparation and Application“. Advanced Materials Research 174 (Dezember 2010): 490–93. http://dx.doi.org/10.4028/www.scientific.net/amr.174.490.

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With the continuous development of printing technology and printing equipments, the quality of newsprint should be improved to meet with all the real demands. Acrylamide copolymer is used in paper-making as process aid and function aid which can effectively improve paper printing adaptability. Preparation and application of polyacrylamide via aqueous copolymerization was studied as dry strength agent in this paper. The polyacrylamide with middle molecular weight and low viscosity was obtained by reacting acrylamide, cationic monomer [2-(acryloyloxy)ethy] -trimethylammonium chloride and N,N-dimethylaminoethyl methacrylate, anionic monomer itaconic acid, active nonionic monomer N-metholacrylamide and crosslinking monomer 1,3,5-triacryloylhexahydro-s-rine, the copolymer was characterized by FT-IR, charge density and molecular weight distribution. On the basis of internal present situation of pulp, the papermaking system with deinking pulp from office waste paper and white water of 1000-1200us/cm conductivity from paper mill were selected for application research. The results show that when the dosage of acrylamide copolymer is 0.8% to the dry weight of pulp and handsheet basis weight is 60g/m2, acrylamide copolymer can show the superior performance to newsprint and receivable cost for paper mill, fluffing speed, tearing strength and internal bonds are respectively improved by 14%, 20% and 30%.

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30

Zhou, Jiemei, Chenxu Zhang, Cailong Shen und Yong Wang. „Synthesis of poly(2-dimethylaminoethyl methacrylate)-block- poly(styrene-alt-N-phenylmaleimide) and its thermo-tolerant nanoporous films prepared by selective swelling“. Polymer 164 (Februar 2019): 126–33. http://dx.doi.org/10.1016/j.polymer.2019.01.013.

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31

Zhu, Xian Mei, Gang Hu Cheng und Hong Zhao Liu. „Preparation and Characterization of Cationic Emulsion of Styrene and Acrylate“. Applied Mechanics and Materials 55-57 (Mai 2011): 1886–91. http://dx.doi.org/10.4028/www.scientific.net/amm.55-57.1886.

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The control of particle size and its distribution has become more and more important both in theory and in practice of emulsion polymerization field. In this study, cationic styrene-acrylate copolymer containing functional monomer was converted into water-soluble polymers by reaction with quaternising agents and acids with the free-soap emulsion polymerization method. The latex was obtained at the existence of nitrogen by the copolymerization of hydrophobic monomer styrene and 2-ethylhexyl acrylate, hydrophilic monomer dimethylaminoethyl methacrylate, modified PVA-0588 as the emulsifiers. The influences of the amount of azoisobutyronitrile initiator, the amount of dimethyl sulphate quaternising agent, reactivity ratio between monomers, charge density and pH value on the preparation process were discussed. The particle size and particle distribution was strongly affected by these factors. The results showed that the latex with narrow particle distribution and mean particle size about 100nm was obtained under redox system by adjusting 33% monomer to become precursor and dropping the rest of 67% monomer, after polymerization, N,N-dimethylamino groups were fully quaternised with dimethyl sulphate to improve the stability of the solutions. The glass temperature of polymer was 58.1°C, as pH values range of solution was 3~5, the stability and charge density of polymer emulsion could improve.

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32

Chiriac, Aurica, Loredana Nita, Iordana Neamtu, Vera Balan und Alina Diaconu. „Upon Synthesis of Poly(N-isopropylacrylamide-co-2-dimethylaminoethyl methacrylate-co-itaconic acid) Copolymers as Matrix Ensuring Intramolecular Strategies for Further Coupling Applications“. Journal of Research Updates in Polymer Science 3, Nr. 1 (02.04.2014): 48–56. http://dx.doi.org/10.6000/1929-5995.2014.03.01.7.

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33

Bardajee, Ghasem Rezanejade, und Zari Hooshyar. „Thermo/pH/magnetic-triple sensitive poly(N-isopropylacrylamide-co-2-dimethylaminoethyl) methacrylate)/sodium alginate modified magnetic graphene oxide nanogel for anticancer drug delivery“. Polymer Bulletin 75, Nr. 12 (11.04.2018): 5403–19. http://dx.doi.org/10.1007/s00289-018-2329-7.

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34

Yang, Jinchul, und Jinyoung Park. „QCM-Based HCl Gas Detection on Dimethylamine-Functionalized Crosslinked Copolymer Films“. Chemosensors 10, Nr. 2 (10.02.2022): 70. http://dx.doi.org/10.3390/chemosensors10020070.

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In this work, sensing behaviors and mechanisms of two crosslinked copolymers with dimethylamine and dimethylamide functional groups were compared and investigated for their ability to detect hydrogen chloride (HCl) gas. The crosslinked copolymer films were photopolymerized on quartz crystal electrodes using a micro-contact printing technique. The gas sensing behaviors were analyzed by measuring resonant frequency (Δf) of quartz crystal microbalance (QCM). The HCl binding capacity of photopolymerized films, with a mass between 4.6 and 5.9 μg, was optimized. Under optimized film mass conditions, the poly(2-dimethylaminoethyl methacrylate-co-ethylene glycol dimethacrylate) (DMAEMA-co-EGDMA), poly(DMAEMA-co-EGDMA), film, C2-DMA, showed a 13.9-fold higher binding capacity than the poly(N,N-dimethylacrylamide-co-ethylene glycol dimethacrylate, poly(DMAA-co-EGDMA), film, C0-DMA, during HCl gas adsorption. HCl gas was effectively adsorbed on the C2-DMA film because of the formation of tertiary amine salts through protonation and strong ionic bonding. Furthermore, the C2-DMA film exhibited excellent sensitivity, of 2.51 (ng/μg) (1/ppm), and selectivity coefficient (k* = 12.6 for formaldehyde and 13.5 for hydrogen fluoride) compared to the C0-DMA film. According to the experimental results, and due to its high functionality and stability, the C2-DMA film-coated QC electrode could be used as an HCl gas sensor, with low-cost and simple preparation, in future endeavors.

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35

Liang, Ze, Zetian Zhang, Yang Liu und Zhengjun Li. „Interaction between Amphoteric Polymer and Silicic Acid Tanned Leather“. Journal of the American Leather Chemists Association 118, Nr. 10 (02.10.2023): 403–16. http://dx.doi.org/10.34314/jalca.v118i10.8229.

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Silicic acid-based tanning system is an effective and promising chrome-free tanning technology, and it is urgent to develop compatible post-tanning processes. Fatliquoring is one of the key procedures to determine the quality of resulted leather and fatliquoring agents mainly play the role of an effective softer/ plasticizer in leather production. However, there is a mismatch between most commercial fatliquoring agents (mainly compatible with chrome tanned leather) and silicic acid tanned leather (named SATL). Herein, an amphoteric polymer emulsion (APE) was prepared by free radical polymerization using methacryloxyethyl trimethyl ammonium chloride (DMC), 2-acrylamido-2-methylpropanesulfonate (AMPS), lauryl methacrylate (LMA), dimethylaminoethyl methacrylate (DMAEMA) as monomers. And in order to improve the lubricating property, APE was further compounded with castor oil to obtain an amphoteric fatliquoring agent (named COAPE). Comprehensive characterization showed that the amphoteric (pI=8.22) and amphiphilic APE could reduce the surface tension of water to 38.6 mN/m. The fatliquoring process was controlled by ingenious regulation of pH based on isoelectric points (pIs) of APE and SATL. In the initial stage, the pH of the bath was adjusted to be lower than the pIs of APE and SATL, amphoteric polymer molecules could easily penetrate into SATL leather as they are all positively charged. While during the fixing stage, the pH of the bath was adjusted between the pIs of APE and SATL, so the electrostatic interaction between amphoteric polymer molecules and SATL leather, as well as the aggregation of amphoteric polymers can promote their combination synergistically. As a fatliquoring agent, the application of COAPE demonstrated that its absorpotion rate (90.5%) was much higher than anionic commercial fatliquoring agent (63.2%), thus imparting SATL leather better softness (6.5 mm), elongation at break (95.5%) and tensile strength (11.6 N/mm2). These findings therefore provided scientific basis and technical support for the application of amphoteric materials to silicic acid-modified collagen matrix and would promote the practical application of silicic acid-based chrome-free tanning technology

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36

Zhang, Bao Hua, Hou Li Cui, Xing Wang Xue, Ping Ping Shen und A. Jun Wan. „Preparation and Properties of Thermo-Sensitive Resin for Processless CTP Plate“. Advanced Materials Research 666 (Februar 2013): 123–29. http://dx.doi.org/10.4028/www.scientific.net/amr.666.123.

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Computer-to-Plate (CTP) technology has been becoming an important topic of research and application during the era of digital printing. Processless CTP plate is regarded as a leading candidate for CTP plate due to its many merits such as friendly to environment, saving resources, good quality of imaging, low cost and so on. A new thermo-sensitive resin which could be used in processless CTP plate was synthesized by solution polymerization with styrene and N, N-dimethylaminoethyl methacrylate in 1:1 molar ratio using azodiisobutyronitrile (AIBN) as initiator and 1,4-dioxane as solvent and then by hydrogen peroxide (H2O2) oxidation of the tertiary amine groups of the copolymer. It could be found from thermogravimetric analysis that there was a slight weight loss before 120°C owing to water evaporation; and there was an obvious weight loss from 140°C to 230°C owing to the decomposition of amine oxide group; and there was a large weight loss after 300°C owing to the decomposition of thermo-sensitive resin. It was found from contact angle analysis that the contact angle of the thermo-sensitive resin film reached maximum 75° after baking for 7 min at 140°C, which means that the decomposition rate of amine oxide group is slow and parts of amine oxide groups decompose incompletely. The contact angle of the thermo-sensitive resin film reached maximum 80° after baking for 5 min at 160°C or 2 min at 180°C which means that thermal decomposition rate increases with the increase of temperature and the decomposition occurs completely. It was also found that the resin film could be easily washed away from the substrate with neutral water before heat-treatment, but it could no longer be removed after the heat-treatment of baking for 5 min at 140°C or baking for 2 min at 160°C or baking for 1 min at 180°C. This new thermo-sensitive resin could be used in chemical-free thermal laser imaging application.

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Sideridou-Karayannidou, I., und G. Seretoudi. „Copolymers of N-vinylcarbazole and N,N-dimethylaminoethyl methacrylate“. Journal of Applied Polymer Science 64, Nr. 9 (31.05.1997): 1815–24. http://dx.doi.org/10.1002/(sici)1097-4628(19970531)64:9<1815::aid-app18>3.0.co;2-w.

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Cho, Sun Hang, Mu Shik Jhon, Soon Hong Yuk und Hai Bang Lee. „Temperature-induced phase transition of poly(N,N-dimethylaminoethyl methacrylate-co-acrylamide)“. Journal of Polymer Science Part B: Polymer Physics 35, Nr. 4 (März 1997): 595–98. http://dx.doi.org/10.1002/(sici)1099-0488(199703)35:4<595::aid-polb7>3.0.co;2-p.

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Burillo, Guillermina, Emilio Bucio, Ernestina Cervera und Takeshi Ogawa. „Studies on salts of amine-containing polymers with benzoic acids. III. Poly(N,N-dimethylaminoethyl methacrylate-g-polyethylene) with benzoic acids“. Journal of Applied Polymer Science 78, Nr. 5 (2000): 972–78. http://dx.doi.org/10.1002/1097-4628(20001031)78:5<972::aid-app50>3.0.co;2-1.

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Ma, Guang-Hui, Masatoshi Nagai und Shinzo Omi. „Study on preparation of monodispersed poly(styrene-co-N-dimethylaminoethyl methacrylate) composite microspheres by SPG (Shirasu Porous Glass) emulsification technique“. Journal of Applied Polymer Science 79, Nr. 13 (2001): 2408–24. http://dx.doi.org/10.1002/1097-4628(20010328)79:13<2408::aid-app1048>3.0.co;2-q.

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41

Huang, Xuehong, Xun Song, Wenmei Xie, Ronxue Zheng, Fuchuan Ding und Qidan Ling. „Ion exchange bipolar membrane: poly(ether ether ketone) grafting poly(2-(N,N-dimethylaminoethyl) methacrylate) synthesized via ATRP“. Journal of Polymer Research 22, Nr. 1 (06.12.2014). http://dx.doi.org/10.1007/s10965-014-0629-7.

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42

Sobh, Rokaya A., Hend S. Magar, Asmaa M. Fahim und M. S. Hashem. „Construction, molecular docking simulation and evaluation of electrochemical properties of polymeric nanospheres comprising novel synthesized monomer via green microemulsion polymerization“. Polymers for Advanced Technologies, 07.12.2023. http://dx.doi.org/10.1002/pat.6248.

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AbstractIn recent years, the invention of polymers have attracted attention due to their unique properties. (E)‐2‐cyano‐N‐cyclohexyl‐3‐(dimethyl amino) acrylamide (CHAA) is a new type of functional monomer created by the usage of 2‐cyano‐N‐cyclohexylacetamide (3) and dimethylformamide‐dimethylacetal (DMF‐DMA) utilized microwave energy as a green technology. In addition, polymers with significant nanosphere groups were obtained by polymerizing a new synthetic monomer (CHAA) with methyl methacrylate (MMA), dimethylaminoethyl methacrylate (DMAEMA) and acrylic acid (AA) using microemulsion polymerization technology. These polymer nanospheres were approved by different spectroscopic analyzes, such as FT‐IR, TEM, TGA, and H1NMR. New structurally defined poly (MMA/DMAEMA/AA/CHAA) nanospheres with an equivalent spherical diameter close to 50 nm and high thermal stability were obtained. In addition, these new polymer nanospheres exhibit good electrochemical performance and greater specific values compared to compound (CHAA) or poly (MMA/DMAEMA/AA). This is very important for the supercapacitor due to the fact that the voltammetry plots of these nanospheres display a well‐known hysteresis cycle. The newly synthesized polymer nanospheres exhibited antibacterial activity, which was confirmed by molecular docking simulations with different affinities. Also, the DFT investigation of the polymeric nanosphere was optimized utilizing B3LYP/6‐31(G) basis set and determination physical decribitors.

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Liu, Jinhui, Yuka Yuan, Shuoli Peng, Liyun Guo, Yudong Liu, Shulan Li, Kai Liu und Jing Hua. „Smart anti‐fouling and self‐repairing polymer brushes for efficient oil–water separation“. Journal of Applied Polymer Science, 02.09.2024. http://dx.doi.org/10.1002/app.56211.

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AbstractThe increasing water pollution problem poses a demand for oil–water separation materials, but preparing separation materials with high efficiency and excellent durability remains a great challenge. In this work, we use a diblock polymer brush of polydimethylsiloxane (PDMS) and poly(N,N‐dimethylaminoethyl methacrylate) (PDMAEMA) based on cotton fabric to prepare oil–water separation membranes with high efficiency, good durability, and intelligent self‐repairing properties. Lubricating PDMS brushes reduces the fouling adhesion due to its low surface energy and high flexibility. pH‐responsive PDMAEMA brushes provide good hydrophobicity and an intelligent self‐repairing effect. The prepared Co‐PDMS‐PDMAEMA has high oil flux (>30,000 L m−2 h−1) and high separation efficiency (>99%) even after 10 cycles and its surface character can be recovered under acidic conditions. Overall, the modified cotton fabric made by such a versatile technique is promising in oil–water separation.

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Kindermann, Marek, Jitka Neburkova, Eva Neuhoferova, Jan Majer, Miroslava Stejfova, Veronika Benson und Petr Cigler. „Design Rules for the Nano‐Bio Interface of Nanodiamonds: Implications for siRNA Vectorization“. Advanced Functional Materials, 22.03.2024. http://dx.doi.org/10.1002/adfm.202314088.

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AbstractThe enormous therapeutic potential of selective ribonucleic acid (RNA) interference has recently been manifested by the approval of several small interfering RNA (siRNA)‐based drugs. However, the efficacy of siRNA delivery is still limited, and an extensive search for alternative and highly effective delivery approaches is ongoing. With this aim, three generations of non‐viral vectors based on modified nanodiamonds (NDs) have been gradually developed in the past decade. They show great promise due to the negligible toxicity of the ND core. Here, a robust methodological approach is presented to enable the evaluation of new vector nanomaterials. Using a new type of third‐generation ND vector coated with a copolymer with tunable charge density, variables such as colloidal stability, surface electrostatic properties, the molecular composition of the copolymer, and the mode of complexation with siRNA are optimized. Using an innovative data processing strategy, the results are related to biological potency, toxicity, and cell proliferation. Finally, the optimized composition of a coating copolymer consisting of a cationic component, 2‐dimethylaminoethyl methacrylate, and an electroneutral biocompatible component, N‐(2‐hydroxypropyl) methacrylamide, is evaluated. The optimized NDs vectors are colloidally and biologically stable siRNA delivery tools with broad potential for RNA interference‐based therapeutics.

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Sobh, Rokaya A., Hend S. Magar, Asmaa M. Fahim, Hossam M. El‐Masry und M. S. Hashem. „Fabrication and Evaluation of Polyacrylate Nanocomposites Embedded With Metal Oxides as Enhanced Multipurpose Nanocarriers for Long‐Term Anti‐Inflammatory and Amazing Antimicrobial Properties“. Applied Organometallic Chemistry, 05.11.2024. http://dx.doi.org/10.1002/aoc.7862.

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ABSTRACTThe design of super‐antimicrobially active multipurpose nanocarriers as polymeric nanocomposites embedded with metal oxides with sustained drug release is beneficial in medical treatment for controlling inflammation and targeting a wide range of pathogenic microorganisms. Brilliant metal oxide nanoparticles (MOx) involving selenium dioxide, titanium dioxide, and vanadium pentoxide were well prepared in good yields, and their morphologies and structures were specified. Then they were embedded in copolymeric nanocomposites through in situ microemulsion polymerization of (E)‐2‐cyano‐N‐cyclohexyl‐3‐(dimethylamino)acrylamide (CHAA) with methyl methacrylate (MMA), dimethylaminoethyl methacrylate (DMAEMA), and acrylic acid (AA). In addition, ibuprofen was then loaded into the synthesized polymers and their nanocomposites to achieve high drug entrapment efficiency EE%, and its release behavior was studied in various simulated fluids. The produced drug‐loaded polymers and their nanocomposites were characterized using Fourier‐transform infrared spectroscopy (FT‐IR), transmission electron microscope (TEM), X‐ray diffraction (XRD), and thermogravimetric analysis (TG). Well‐defined nanospheres of polymeric‐metal oxide nanocomposites were generated in a size range of 50 nm, with ibuprofen loaded at a high encapsulation efficiency of approximately 97%. In vitro drug release was inspected for the polymer and its nanocomposites revealing that the presence of metal oxide nanoparticles resulted in prolonged and sustained release behavior for wound dressing. The antimicrobial study based on the zone of inhibition against various pathogenic microorganisms showed excellent activity against Bacillus cereus, Staphylococcus aureus, Escherichia coli, Helicobacter pylori, and Candida albicans. These findings validate the potential of these nanocomposites to serve as a viable upcoming antimicrobial agent for the treatment of human ailments.

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